In a large skillet, sauté chopped onions and celery in olive oil until soft. Add pork and beef and cook until meat is evenly browned. Transfer to a large pot over low heat. Add chicken thighs, tomatoes, ketchup, barbecue sauce, salt and pepper, hot sauce, and green pepper. Cook, stirring occasionally for 2 hours or until thickened Then add corn and pineapple. Continue cooking for 1 hour more.